Home / 100,955.64-139,319.70-55,635.26

Finding the Fourth Proportional to 100,955.64, 139,319.70 and 55,635.26

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Solution

The fourth proportional to 100,955.64, 139,319.70 and 55,635.26 is: 76,777.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,955.64 : 139,319.70 = 55,635.26 : x
  2. Step 2: Convert to fraction form
    100,955.64/139,319.70 = 55,635.26/x
  3. Step 3: Cross multiply
    100,955.64x = 139,319.70 × 55,635.26
  4. Step 4: Simplify right side
    100,955.64x = 7,751,087,036.02
  5. Step 5: Solve for x
    x = 7,751,087,036.02/100,955.64
  6. Step 6: Final answer
    x = 76,777.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.